Modulus9

A check digit algorithm, Modulus9

• 法人番号

in JavaScript (ES module)

• Modulus9.js

how to use

import { Modulus9 } from "https://code4fukui.github.io/Modulus9/Modulus9.js";

console.log(Modulus9.calc("011101042092")); // 3
console.log(Modulus9.check("3011101042092")); // true
console.log(Modulus9.addCheckDigit("011101042092")); // "3011101042092"

test

deno test

sample app

Modulus9.js test

related

• Verhoeff
• Luhn
• Modulus11
• Modulus10